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DripMetrics Kyle Lambda - Polymarket Price Impact Estimator
x402
DripMetrics Kyle Lambda - Polymarket Price Impact Estimator is a paid API for AI agents from api.dripmetrics.ai, paid per call via x402, $0.050000/call, status unknown (last checked 2026-09-15).
Estimates Kyle's Lambda (price impact per unit of signed notional flow) for a selected Polymarket YES or NO outcome over a specified time window
Price / call$0.050000
Success—
StatusUnknown
How this service works
DripMetricsAI (https://dripmetrics.ai/) provides on-demand crypto market microstructure metrics, Hyperliquid candle metrics, Polymarket diagnostics, and on-chain DefiLlama metrics for agents, dashboards, and trading workflows.
Output
A structured JSON object containing the Kyle Lambda value (price impact per unit of signed notional flow), the effective analysis window, metric name, and component breakdown for the selected Polymarket YES or NO outcome.
Example use cases
Example prompt
“What's the Kyle Lambda for the YES side of the Polymarket market with slug 'will-the-fed-cut-rates-in-july' over the last 60-minute window?”
Technical details
Endpoint
POSThttps://api.dripmetrics.ai/polymarket/kyle-lambdaWhen to prefer
Use this endpoint when you need to quantify how much price moves per unit of net signed order flow on a specific Polymarket market — useful for assessing liquidity depth, informed trading risk, or execution cost before placing a large prediction market trade. Prefer this over generic volume or spread metrics when you need a rigorous microstructure-based impact coefficient.
Side effects
- Invalid or unrecognized conditionId/tokenId/slug returns an error
- Missing required 'outcome' parameter causes request rejection
- Ambiguous event slug with multiple markets requires conditionId to disambiguate
- No trade data in the requested window returns null or zero lambda
- windowMinutes too narrow with insufficient trades reduces metric reliability
- Payment failure via x402 blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"slug": "fed-decision-in-october",
"value": 0.00169347,
"metric": "kyle-lambda",
"source": {
"market": "https://gamma-api.polymarket.com/markets/slug/fed-decision-in-october",
"trades": "https://data-api.polymarket.com/trades",
"priceHistory": "https://clob.polymarket.com/prices-history"
},
"window": {
"windowMinutes": 60
},
"assetId": "52114319501245791867035421127632480533667839244426816785285192633646117989903",
"outcome": "YES",
"tokenId": "52114319501245791867035421127632480533667839244426816785285192633646117989903",
"components": {
"alpha": -0.01128977,
"lambda": 0.00169347,
"rSquared": 0.997935,
"intervals": 3,
"lastPrice": 0.5,
"meanSignedFlow": 6.666667,
"selectedOutcome": "YES",
"totalAbsoluteFlow": 29
},
"computedAt": "2026-05-25T14:00:00.000Z",
"sampleSize": {
"trades": 4,
"pricePoints": 4,
"scannedTrades": 4
},
"conditionId": "0xdd22472e552920b8438158ea7238bfadfa4f736aa4cee91a6b86c39ead110917"
}
}Tags
x402
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